Is Subnautica 2 multiplayer or co-op?
Yes — co-op. Subnautica 2 is a sci-fi survival game released in 2026, not enough Steam reviews yet. $29.99 on Steam.
Co-opSingle-player tooSurvival · Sci-fi survival
Subnautica 2 is an underwater survival adventure set on an all-new alien world, developed by Unknown Worlds.…
How Subnautica 2 plays with friends, according to Steam
- Online co-op
- Yes
- Local / split-screen co-op
- Not listed on Steam
- Online PvP
- Not listed on Steam
- LAN play
- Not listed on Steam
- Cross-platform multiplayer (Windows / Mac / Linux)
- Yes
- Single-player mode
- Yes
- Controller
- Full controller support
- PC Game Pass
- In the catalog (rotates monthly — see the list)
Steam's own category list for the game, as of 2026-09-09. "Not listed" means the store page does not claim that mode; community mods or Remote Play can still add it.
Steam tags: Action, Adventure, Early Access
Do you and a friend both own Subnautica 2?
Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether Subnautica 2 is one of them — then helps you pick tonight's game with a weighted roll or a bracket.
Or open the Steam store page.
Games like Subnautica 2 you can play together
No Man's SkySci-fi survival · 83% positive on Steam (352,858 reviews) · 12,291 playing right now
Space EngineersSci-fi survival · 89% positive on Steam (132,347 reviews) · 4,201 playing right now
SubnauticaSci-fi survival · 97% positive on Steam (313,707 reviews) · 2,719 playing right now
StarboundSci-fi survival · 92% positive on Steam (164,906 reviews) · 894 playing right now
ASTRONEERSci-fi survival · 92% positive on Steam (128,956 reviews) · 988 playing right now
Tired of Subnautica 2? The Swap tab finds the closest unowned games of the same type that are newer or rated higher.
Quick answers
- Is Subnautica 2 co-op?
- Yes, Subnautica 2 supports co-op.
- Does Subnautica 2 have PvP?
- Steam does not list PvP for Subnautica 2.
- Do we both need to own Subnautica 2 to play together?
- Yes. Subnautica 2 is played online, so each player needs their own copy on their own Steam account (or PC Game Pass where it is offered). Steam Families can share a library, but two people cannot play the same shared game at the same time.
- How many people play Subnautica 2?
- Player counts were not available when this page was built.
- Is Subnautica 2 on PC Game Pass?
- Yes — Subnautica 2 was in the PC Game Pass catalog when this page's data was last refreshed (2026-09-09). Game Pass rotates titles monthly, so check the Game Pass listing before you count on it.